Abstract：To deal with the difficulty of calculation of matrix mineral elastic modulus in regular S-wave velocity estimation methods based on Xu-White model,the paper proposes a novel method for S-wave velocity estimation based on equivalent elastic modulus inversion.Firstly,the method calculates the range and initial value of Poisson's ratio of dry core sample and equivalent bulk modulus of matrix mineral.Then,it calculates the fluid section by two different methods based on inversion method,and obtains the Poisson's ratio of dry core sample and equivalent elastic modulus of matrix mineral.Finally,this method uses the approximative Xu-White model to estimate the S-wave velocity.Through study of the equivalent elastic modulus of matrix mineral,the method effectively improves the accuracy and reliability of S-wave velocity estimation by reducing the number of target parameters.
熊晓军, 林凯, 贺振华. 基于等效弹性模量反演的横波速度预测方法[J]. 石油地球物理勘探, 2012, 47(5): 723-727.
Xiong Xiao-jun, Lin Kai, He Zhen-hua. A method for S-wave velocity estimation based on equivalent elastic modulus inversion. OGP, 2012, 47(5): 723-727.
